Duplex-bar bumper for automobiles



W. G. COX. DUPLEX BAR BUMPER FOR Aummonzs.

APPLIATIOH HLED IAN. 23. 922.

Y are also counterparts so that one "together to provide a complete PATENT orrice.

WILLIAM G. COX, 0F CLEVELA'I), HIO.

DUPLEX-BAR BUMPER` FRl AUTMOBILES.

Specification of Letters Patent.

Patented Apr. .11, 1922.

.Application led January 23, 1922. .Serial No. 531,033.

To aZZ- whom t may concern:

Be it known that I, WILLIAM G. Cox, a citizen of the United States, residing at Cleveland, in the county of `Cuyahoga and State of Ohio, have invented certain new and useful Improvements in a Duplex-Bar Bumper for Automobiles, of which the following is a specification.-

In -the bumper now under consideration I provide two straight impact bars of spring metal spaced apart vertically and uniformly the Afull length of the bumper and` looped inwardly and offset in a vertical plane at each end to permit the end portions of the two bars to be united together as av single supporting bar adapted to be engaged and 4upheld in suitable brackets afiixed to the frame ends of an automobile, and the looped offset portions of each bar incline reversely to ward each other and the inturned end por? tions are of differentl length. The' two bars bar may be and united bumper in which two .independently flexible impact portions of extended length are placed parallelly one above the other to act either jointly or separately in meeting a shock or blow. Where relatively springy bars are used and the tendency of the long stretches inverted in respect to the other is to vibrate between the looped ends in the travel of the vehicle over the road, I interpose an anti-rattling and re-'enforcmg s lingloop between the two front bars, and

t e rearvsupporting bar mid-length of the bumper and use a single bolt to secure this device and the meeting'ends of the bars together.

In the drawing forming part of this application, Fig. v1 is a plan view of my improved bumper mounted upon the frame ends ofi an automobile, and Fig. 2 1s a front elevation of the bumper alone.l Fig. 3 is a front view of one of the counterpart bars,

while Fig. 4 shows the same bar inverted. Fig. 5 is a plan or edge view of the bar shown in Fig. 4. Fig. 6 is an end vlew of the bumper',v and 'l"ig. 7 a vertical cross-secy tion on line 7 7 of Fig'. 2. Fig. 8 is a perspective view of the anti-rattling and reenforcing spring. Fig. 9 is a cross-section of the bumper showing a modified form of anti-rattling and rcenforcing spring.

As hereinbefore stated, the bumper comprises two counterpart bars 2 and 3 madeof fiat spring metal, and therefore, a descr1p 'bolt 10 is. used to fasten the ends tion of one bar applies equallyto the other."

Thus, each bar is a straight' bar looped'back upon itself to provide a long arm 4513' and a short arm 5 extending toward each other at the rear side of the main straight impact portion 6. vShort varm 5 is bent' vertically at an inclination in respect to' the straight impact portion 6 rand provided with a bolt hole 7 near rits extremity, whereas longer arm 4 extends for the greater part of its length, parallel with inipact portion although also bent vertica-llyat an inclination at 8 where joined with the loop end of the bar. In this way the straight portion of long arm 4 is offset portions at eachend are inclined reversely to each other. This permits a pair of counterpart bars to be reversely related and assembled with the ends of the long arms 4 overlapping each other and the ends of the short arms 5 ofl the long arms, and bolts or rivets may then be'introduced through the registering bolt openings in the overlapping arts to unite the bars rigidly together. single of the longarms to eachother and to a spring clip 11 of flat strap\'metal having flexible ends adapted to bear against the rear sides of the impact portions 6 of the two assemalso overlapping the base ends bled bars, see Fig. 7. Each bar'is thus tion, see Fig. 9.

1. Airautomobile bumper, comprising two spring bars having straight impact portion extending parallelly the full length of the bumper and adapted tobe flexed independently and having looped ends and reversely-' inclined overlapping arm portions united together and adapted to support said straight impart portions in spaced parallelism.

2. A duplex bar bumper for.automobiles` comprising two straight impact bars 'of spring metal spaced apart vertically the full length of the bumper and looped and offset towardeach other in a vertical plane at each end and having straight arms united together to form a single rear supporting bar for both impact bars.

3. A duplex bar bumper for automobiles,

comprising two parallel front impact bars and a single rear supporting bar spaced apart from said front bars, and a springclip interposed between said front and rear bars adapted to prevent vibration and rattling. v

4. A duplex barlmmper for automobiles, comprising two counterpart bars, havlng straight impact portions extending paral- 10 lelly in vertically spaced relation the full In testimony whereof I aix my signature.

WiLLLlM o. ooX. 

